Home / 663,379,409.92-915,350,208-384,857,086.72

Finding the Fourth Proportional to 663,379,409.92, 915,350,208 and 384,857,086.72

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Solution

The fourth proportional to 663,379,409.92, 915,350,208 and 384,857,086.72 is: 531,037,004.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,379,409.92 : 915,350,208 = 384,857,086.72 : x
  2. Step 2: Convert to fraction form
    663,379,409.92/915,350,208 = 384,857,086.72/x
  3. Step 3: Cross multiply
    663,379,409.92x = 915,350,208 × 384,857,086.72
  4. Step 4: Simplify right side
    663,379,409.92x = 352,279,014,379,426,048
  5. Step 5: Solve for x
    x = 352,279,014,379,426,048/663,379,409.92
  6. Step 6: Final answer
    x = 531,037,004.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.